How do you mock a Sealed class?

Question

Mocking sealed classes can be quite a pain. I currently favor an Adapter pattern to handle this, but something about just keeps feels weird.

So, What is t

Answer 1

I believe that Moles, from Microsoft Research, allows you to do that. From the Moles page:

Moles may be used to detour any .NET method, including non-virtual/static methods in sealed types.

UPDATE: there is a new framework called "Fakes" in the upcoming VS 11 release that is designed to replace Moles:

The Fakes Framework in Visual Studio 11 is the next generation of Moles & Stubs, and will eventually replace it. Fakes is different from Moles, however, so moving from Moles to Fakes will require some modifications to your code. A guide for this migration will be available at a later date.

Requirements: Visual Studio 11 Ultimate, .NET 4.5